I/O controller for controlling the sequencing of execution of I/O commands and for permitting modification of I/O controller operation by a host processor
US4901232A · kind A · utility
93Cited by
13References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1987 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Jan 9, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/126
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data processing system which includes a host processor and an input/output (I/O) controller unit for controlling communication with I/O devices. The controller processor receives I/O commands from the host processor, accesses and stores control block lists of control commands associated with such I/O commands, and executes the control commands from such control block lists. The controller unit stores controller information concerning the operational capability of the controller unit and the host processor is capable of accessing such controller information and in turn can modify such operational capability if desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.